1. 警惕性是萬萬不可放松的。
   You cannot afford to relax your vigilance for a moment.
2. 她不可能如此遲鈍。
   She cannot possibly be so obtuse.
3. 你不可因一個人貧窮而輕視他。
   You must not despise a man because he is poor.
4. 我不能不可憐他。
   I cannot but pity him.
5. 他不可能感冒，因為當天我還看到他跟瑪麗跳舞。
   He cannot have caught a cold, because I saw him dancing with Mary the same day.
6. 這封信不可能是她自己寫的。
   She cannot have written the letter herself.
7. 他是個老實人，所以他不可能偷了我的錢。
   He is honest, so he cannot have stolen my money.
8. 她反復地給孩子們說，他們不可以獨自橫過馬路。
   She drummed it into the children that they must not cross the road alone.

不的英語翻譯：

可的英語翻譯：